Search
Google ClassroomGoogle Classroom
GeoGebraGeoGebra Lesson
GeoGebra
  • Home
  • Resources
  • Profile
  • Classroom
  • App Downloads

Triangle Proportionality Theorem

Author:Jen Stahl
Move segment DE. What do you notice about the ratios?

Triangle Proportionality Theorem

New Resources

  • Isosceles Right Triangle
  • Angle Addition Postulate (V2) - Integer Solutions
  • Writing and Graphing Proportional Relationships (k>0)
  • Right Triangle Inscribed in a Semicircle
  • Rossler's Attractor

Discover Resources

  • The Difference Quotient (Illustrated)
  • Simplifying Imaginary Roots
  • reflection of an object in the line y=mx+c
  • Math2
  • P.5_FRACTION_NPMPS_UPDATED

Discover Topics

  • Vectors 2D (Two-Dimensional)
  • Sphere
  • Rectangle
  • Kite
  • Multiplication
AboutPartnersHelp Center
Terms of ServicePrivacyLicense
Graphing CalculatorCalculator SuiteMath Resources

Download our apps here:

Download_on_the_App_Store_Badge_US-UK_RGB_blk_4SVG_092917

© 2026 GeoGebra®